I also use Diigo to bookmark sites. It was a life saver after Google discontinued a similar service that I had just posted 200+ bookmarks on. I like that you can save several notes and highlight sections, see a visual preview of each link. Best of all you can put them into LISTS (a feature that too many bookmarking companies don’t seem to find important enough to add)!

However, Pinterest is the best to bookmark specific images. I use it all the time for that purpose.

I am not sure if I am understanding your question right. The tool is pretty accurate when you go to add a “pin”, you just pick the image, add a note and select a category. Later when you want to find the original source again, you just click on the image to pull it up and then click on it again to go to the original site.

I also recently added a couple plugins to a couple of my blogs. It couldn’t have been easier. No code hassle required.